U.S. Geological Survey
2015
Seismic shots at 100 shot intervals collected using an EdgeTech 424 chirp seismic-reflection data by the U.S. Geological Survey in the Barnegat Bay, NJ in 2011, 2012, and 2013 (Esri point shapefile, Geographic, WGS 84).
1.0
vector digital data
Data Series
937
Woods Hole Coastal and Marine Science Center, Woods Hole, MA
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.3133/ds937
http://pubs.usgs.gov/ds/0937/downloads/shapefile/BarnBaySeisShot100.zip
http://pubs.usgs.gov/ds/0937/
Brian D. Andrews
Jennifer L. Miselis
William W. Danforth
Barry J. Irwin
Charles R. Worley
Emile M. Bergeron
Dann S. Blackwood
2015
Marine geophysical data collected in a shallow back-barrier estuary: Barnegat Bay, New Jersey
1.0
Data Series
937
Reston, VA
U.S. Geological Survey
http://dx.doi.org/10.3133/ds937
Water quality in the Barnegat Bay-Little Egg Harbor estuary along the New Jersey coast is the focus of a multidisciplinary research project begun in 2011 by the U.S. Geological Survey (USGS) in partnership with the New Jersey Department of Environmental Protection. This narrow estuary is the drainage for the Barnegat Watershed and flushed by just three inlets connecting it to the Atlantic Ocean, is experiencing degraded water quality, algal blooms, loss of seagrass, and increases in oxygen-depletion events, seaweed, stinging nettles, and brown tide. The scale of the estuary and the scope of the problems within it necessitate a multidisciplinary approach that includes characterizing its physical characteristics (for example, depth, magnitude and direction of tidal currents, distribution of seafloor and subseafloor sediment) and modeling how the physical characteristics interact to affect the estuary's water quality. Scientists from USGS Coastal and Marine Geology Program offices in Woods Hole, Massachusetts, and St. Petersburg, Florida, began mapping the seafloor of the Barnegat Bay-Little Egg Harbor estuary in November 2011 and completed in September 2013. With funding from the New Jersey Department of Environmental Protection and logistical support from the USGS New Jersey Water Science Center, data were collected with a suite of geophysical tools, including swath bathymetric sonar for measuring seafloor depth, a sidescan sonar for collecting acoustic-backscatter data (which provides information about seafloor texture and sediment type), and a subbottom profiler for imaging sediment layers beneath the floor of the estuary. More information at about the individual USGS surveys conducted as part of this study can be found on Woods Hole Coastal and Marine Science Center Field Activity webpages: 2011-041-FA: http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2011-041-FA 2012-003-FA: http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2012-003-FA 2013-014-FA: http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2013-014-FA 2013-030-FA: http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2013-030-FA
This dataset contains seismic shot point navigation for approximately 2092 kilometers of seismic profile lines collected using a EdgeTech 424 seismic reflection profiler. The purpose of this shapefile is to provide shot navigation at 100 shot intervals to correlate to shot spacings labeled in the hyperlink to the PNG image file of the seismic reflection profile.
20111101
20130916
ground condition of individual surveys during bathymetry collection: 20111101-20111107; 20120321-20120408; 20130313-20130326; 20130911-20130916.
None planned
-74.318597
-74.049522
40.090249
39.468325
USGS Metadata Identifier
USGS:ee431ef5-5d21-4497-bdda-d8dd292b7113
none
U.S. Geological Survey
USGS
Coastal and Marine Geology Program
Woods Hole Coastal and Marine Science Center
RV Rafael
seismic profile
Marine Geology
seismic reflection
EdgeTech 424
point shapefile
shot-point navigation
field activity serial number 2011-041-FA
field activity serial number 2012-013-FA
field activity serial number 2013-014-FA
field activity serial number 2013-030-FA
ISO 19115 Topic Category
oceans
geoscientificInformation
USGS Thesaurus
navigational data
marine geophysics
geospatial datasets
Geographic Names Information System (GNIS)
United States of America
State of New Jersey
Barnegat Bay
Metedeconk River
Mantoloking
Toms River
Forked River
Barnegat Inlet
Tuckerton
Little Egg Harbor
Little Egg Inlet
none
seafloor
sea floor
none
2011
2012
2013
none
none
Brian Andrews
U.S. Geological Survey
Geographer
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
USA
508-548-8700 x2348
508-457-2310
bandrews@usgs.gov
BarnBaySeisShot100.jpg
Thumbnail image of seismic shots collected within Barnegat Bay, NJ. The file is located in the compressed zip file.
JPEG
Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4095
John Stockwell
2011
CWP/SU: Seismic Unix
Golden, CO
Center for Wave Phenomena - Colorado School of Mines
http://www.cwp.mines.edu/cwpcodes/index.html
Paul Henkart
2011
SIOSEIS
LaJolla, CA
Scripps Institution of Oceanography, University of California - San Diego
http://sioseis.ucsd.edu/index.html
Michael W. Norris
Alan K. Faichney
2002
SEGY Rev.1 Data Exchange Format1
Tulsa, OK
Society of Exploration Geophysicists
http://www.seg.org/documents/10161/77915/seg_y_rev1.pdf
All attributes were checked for consistency between the four surveys.
During Julian day 309 and 310 of survey 2011-041-FA the depths from the Garmin fathometer was logged directly to the SEGY header for heave corrections. Although the depths were recorded to the SEGY, the x,y coordinates of the navigation were occasionally recorded ~ 10m offset from the trackline. Some of these offset shots included the 100 shot interval extracted for this shapefile. These shots were not removed from the "BarnBaySeisShot100.shp" The navigation for these two days were edited (prior to generating the trackline and after generating the "BarnBayShot100.shp") to remove these erroneous points produced from recording the depth to the SEGY header. As a result, some of the 100 shot intervals in the "BarnBaySeisShot100" point shapefile, do not fall directly on this "BarnBaySeisTrks.shp" polyline shapefile, however, they can still be used to identify distance along the line when viewing the seismic profile images.
Gaps in sequential line numbers may exist.
The EdgeTech 424 subbottom profiling systems was towed from a davit mounted on the starboard side of the R/V Rafael. Cable layback was 4 meters, depth below the water line was 0.5 meters. GPS offset from sheave: x = 2.38, y = .62, z = 0. All offset values were entered into SonarWiz (ver. 5.03 ) starting with line 1. The actual position of the towfish in relation to the DGPS receiver was calculated during post processing based on the layback and offset values entered in the SonarWiz acquisition software. Horizontal position accuracy is assumed to be ± 3-5 meters (taking into account the navigation issues described in the Logical Consistency Report.
U.S. Geological Survey
Unpublished Material
512i navigation
vector digital data
disc
20111101
20130916
ground condition of individual surveys during bathymetry collection: 20111101-20111107; 20120321-20120408; 20130313-20130326; 20130911-20130916.
SEG-Y and JSF 512i files
Seismic profile data were collected along approximately 2092 kilometers of survey lines using an EdgeTech 424 subbottom profiling system (frequency modulation swept frequency 4-24 kHz) which was towed from the starboard side of the R/V Rafael. SonarWiz seismic-acquisition software was used to control the EdgeTech 3100 portable topside unit, digitally log trace data in SEG-Y rev. 1 format (IEEE floating point), and record GPS navigation coordinates to the SEG-Y trace headers (in arcseconds of latitude and longitude, multiplied by a scalar of 100). During the survey, data were acquired using a 250 ms shot rate with a 5 ms transit pulse length, logging 100 ms of data per trace. A swept frequency spectrum of 4-24 kHz was used for the entire survey, selectable via SonarWiz communicating with the EdgeTech 3100 topside controller. DGPS navigation was supplied by a Hemisphere receiver with the antenna located on the port side aft cabin. Cable layback is 4 meters, depth below water line 0.5 meters. GPS offset from sheave: x = 2.38, y = .62, z = 0. Entered these values into SonarWiz starting with line 1.
Seismic-reflection data were processed using SIOSEIS (2011) and Seismic Unix (Stockwell and Cohen, 2008). All navigation data were extracted from trace headers, edited, and saved as ASCII text files.
Step 1:
SIOSEIS (version 2010.2.25) was used to read SEG-Y files, renumber shots starting from one, and write out new SEG-Y files. The original shot numbers, which were assigned by SonarWiz sequentially over the duration of an acquisition session despite SEG-Y file changes, are preserved in the raw SEG-Y data.
2013
Brian Andrews
U.S. Geological Survey
Geographer
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
USA
508-548-8700 x2348
508-457-2310
bandrews@usgs.gov
Step 2:
Seismic Unix (version 4.2) was used to read renumbered SEG-Y files, write a Seismic Unix file, and extract SEG-Y trace header information, including shot number, longitude, latitude, year, Julian day, and time of day (UTC). Geographic coordinates (WGS84) were converted to UTM zone 18 coordinates (WGS 84) using Proj (version 4.6.0). Header information from each SEG-Y file was saved to text files after an AWK (no version) filter was used to maintain the first and last shots, shots at multiples of 100, and shots with unique navigation coordinates. End shots and shots at multiples of 100 may not have unique navigation coordinates. A 100 shot interval was chosen because it corresponds to the annotation interval provided along the top of the seismic-reflection profile PNG images.
2013
Brian Andrews
U.S. Geological Survey
Geographer
mailing and physical address
384 Woods Hole Rd
Woods Hole
MA
02543-1598
USA
508-548-8700 x2348
508-457-2310
bandrews@usgs.gov
Step 3: Convert 100 Shots to feature class.
Shot point positions at 100 shot intervals for each Julian Day were concatenated and saved as a comma delimited file ("JDXXX"_100Shot.csv). An AWK script was used to add and populate attribute fields 'Survey', 'sonar', and 'vessel'.
Text files containing 100 shot navigation for each Julian Day was converted to a file geodatabase feature class using the context menu within ArcCatalog (v. 9.3.1). Input file= JDXXX_100Shot.csv, output file= JDXXX100Sht. Next, the feature classes for each Julian Day of a survey were merged to create on feature class for each field activity number (survey). Input file= JDXXX_100Sht, output=SeismicShot100_"Survey". Finally the 100 shot feature classes from the four surveys were merged into one point feature class using the merge tool in ArcCatalog (v.9.3.1). Input files= SeismicShot100_2011-041, SeismicShot100_2012_003, SeismicShot100_2013_014, SesimicShot100_2013_030. Output featureclass= "BarnBaytSeisShot100"
201403
Brian Andrews
U.S. Geological Survey
Geographer
mailing and physical address
384 Woods Hole Rd
Woods Hole
MA
02543-1598
USA
508-548-8700 x2348
508-457-2310
bandrews@usgs.gov
Step 4 Convert feature class to shapefile.
Before converting the file geodatabase feature class to a shapefile, a new string attribute "time" was added using the "add field" tool within ArcCatalog (v.9.3.1). The new "time" attribute was calculated using the "UTC" date/time attribute. The feature class was exported from the table of contents in ArcMap (v.9.3.1) to a shapefile (BarnBaySeisShot100.shp) using the coordinate system of the data frame (Geographic, WGS 84). Finally the "UTC" data/time field, and the "OBJECT_ID fields from the original feature class were deleted from the new shapefile.
2014
Brian Andrews
U.S. Geological Survey
Geographer
mailing and physical address
384 Woods Hole Rd
Woods Hole
MA
02543-1598
USA
508-548-8700 x2348
508-457-2310
bandrews@usgs.gov
USGS Thesaurus keywords added to the keyword section.
20180720
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Crossref DOI link was added as the first link in the metadata.
20191115
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Added keywords section with USGS persistent identifier as theme keyword.
20200908
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Vector
Entity point
32211
0.000001
0.000001
Decimal degrees
D_WGS_1984
WGS_1984
6378137.000000
298.257224
BarnBaySeisShot100
shot point navigation for seismic profiles at 100 shot intervals
USGS
FID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
Esri
Coordinates defining the features.
east
Easting coordinate in UTM Zone 18 meters, WGS 84
USGS
558582.7
581071.63
meters
0.1
north
Northing coordinate in UTM Zone 18 meters, WGS 84
USGS
4368982.23
4438190.83
meters
0.01
lon
Longitude coordinate in decimal degrees, WGS 84
USGS
-74.318597
-74.049522
decimal degrees
0.000001
lat
Latitude coordinate in decimal degrees, WGS 84
USGS
39.468325
40.090249
decimal degrees
0.000001
line
name of seismic line file.
USGS
character set.
shot
shot number (first, last and every 100 interval between)
USGS
1
21740
shot number
1.0
year_
Calendar year data were collected
USGS
2011
2013
calendar year
1
JD
Julian day the data were collected. Where Julian day is the integer number representing the interval of time in days since January 1 of the year of collection
USGS
72
311
sonar
Type of seismic sonar used to collect data
USGS
character set
vessel
Name of survey vessel
USGS
character set
time_utc
Time of shot in Universal Coordinated Time (HH:MM:SS)
USGS
character set
SurveyID
Woods Hole Coastal and Marine Science Center Field Activity Number. Where the first 4 characters are the year of the survey (2011), followed by the sequential number of the survey (041), followed by "FA" for Field Activity.
USGS
character set
Brian Andrews
U.S. Geological Survey
Geographer
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543
USA
508-548-8700 x2348
bandrews@usgs.gov
BarnBaySeisShot100.zip: contains BarnBaySeisShot100.shp and the associated shapefile files, BarnBaySeisShot100.jpg browse graphic, and the associated FGDC metadata.
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
shapefile
ArcGIS 9.3
Esri point shapefile
WinZip file containing navigation for EdgeTech 424 seismic-reflection data collected by the U.S. Geological Survey in Barnegat Bay, NJ in point shapefile format and associated metadata.
WinZip (v. 14.0)
1.58
http://pubs.usgs.gov/ds/0937/downloads/shapefile/BarnBaySeisShot100.zip
http://pubs.usgs.gov/ds/0937/
Data can be downloaded via the World Wide Web (WWW)
none
This zip file contains data available shapefile format. The user must have software capable of uncompressing the WinZip file and displaying the shapefile.
20240318
Brian Andrews
U.S. Geological Survey
Geographer
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
USA
508-548-8700 x2348
508-457-2310
whsc_data_contact@usgs.gov
The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240318)
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time